Home / 3,112.87-4,294.30-1,853.21

Finding the Fourth Proportional to 3,112.87, 4,294.30 and 1,853.21

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Solution

The fourth proportional to 3,112.87, 4,294.30 and 1,853.21 is: 2,556.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.87 : 4,294.30 = 1,853.21 : x
  2. Step 2: Convert to fraction form
    3,112.87/4,294.30 = 1,853.21/x
  3. Step 3: Cross multiply
    3,112.87x = 4,294.30 × 1,853.21
  4. Step 4: Simplify right side
    3,112.87x = 7,958,239.70
  5. Step 5: Solve for x
    x = 7,958,239.70/3,112.87
  6. Step 6: Final answer
    x = 2,556.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.